Cephalotus flower stalks start to grow during early summer and for such a small plant is surprisingly long - 60cm or more. This length is perhaps so the flowers are pollinated well away from the insect eating pitchers and possibly above or amongst the surrounding vegetation where passing flying insects are more likely.
The flowers, when they appear, are small - about 4mm across - and are white with a hint of green. They are capable of self pollination although cross pollination produces a better and more consitant set - you can do this yourself using a small artists paintbrush to tranfer the pollen between flowers and/or plants. They produce 1 seed per ovary, with between 6 and 10 seeds per flower.
Once the flowers have been pollinated the seed start to swell over the summer months. When the seed ripen they turn brown and start to extend the hairs on the seed body - even the seeds are hairy in this plant. These hairs and their lightness indicate that the seeds are wind dispersed especially when you consider the length of the flower stalk as previously mentioned. If you wish to collect seed for propagation, only collect them as the hairs on the seed bush out and they begin to fall from the stalk.